Question

the noise level or volume can be measured in decibels: db(a). some examples: - normal conversation: 60 db(a) - electrical appliances: > 85 db(a) - power drill: 100 db(a) it is advisable to use ear protection at noise levels greater than 80 db(a). common types of ear protection: - ear muffs are worn over the ears. - custom molded ear plugs individually made - to - measure ear protection. - ear plugs the ear plug is kneaded and then put in the ear. on expansion, the hearing channel is closed off, resulting in noise reduction. note: dont ever use combinations of ear protection. the noise via bone conduction can damage hearing. what noise level is produced by electrical appliances? about 90 db(a). about 71 db(a). about 85 db(a). about 80 db(a). check

Explanation:

The text states that electrical appliances produce a noise level of > 85 dB(A). Among the options, the closest value greater than 85 dB(A) is about 90 dB(A).

Answer:

About 90 dB(A).